Select from another table within a select

Hello all,
Here is my problem. I am working with thousands of records in each of the tables I am accessing. In the following code it takes about 1min-2min to process this select statement. I get the results I want but the query time is unacceptable. With all of my queries combined it would take over 10 days to complete this code. I would like to cut this time down as much as possible and feel this is the only way to achieve this. I have also tried temp tables to store the rows from the second select statement, no luck. Any input would be greatly appreciated.
Thanks
select count(*)
     from first_table
     where id='1'
               and contract_year='2006'
               and site_code='00007'
               and district='00002'
               and std_id in (select std_id from second_table where attempt = 'Y' and scale ='Y');

A few thoughts. First, you could try this...
SELECT COUNT(*)
FROM   first_table a,
       second_table b
WHERE a.id='1'
AND    a.contract_year='2006'
AND    a.site_code='00007'
AND    a.district='00002'
AND    a.std_id = b.std_id
AND    b.attempt = 'F'
AND    b.scale = 'Y';If you have no indexes, you could try the PARALLEL hint to improve the query. You could CACHE one or both tables to improve performance. Of course, indexes are always a preferred option!. As a final thought, if this is really going to take 10 days, perhaps the procedure(s) you are executing are inherently inefficient. You might want start there first.
Greg Pike
http://www.singlequery.com

Similar Messages

UPDATE SQL string substitution from another table

Hi - I've come across a tricky situation where I would want to update a column in all the relevant rows of a table with values obtained from another table WITHIN the same column update using string concatenation. im not getting any clean way of doing this.
The goal is to achieve something like this:
UPDATE table1 set col1 =
'LANG_ID=(%s),'||
'_CHALLENGE_RESPONSE_=(%s),'||
'CRDN_NAM=(%s),'||
'CLNT_MODE=(%s),'||
'PTY_ID=(%s),'||
'CRDN_VAL=(%s),' ||
'USER_TZ_COD=(%s),' ||
'GTS_USER_ID=(%s),'||
'SP_ID=(%s),' ||
'SP_ALIAS=(%s),' ||
'ORIG_CLNT_ID=(%s)'
where table1.col1 is null
and to substitute the (%s) with data from another table2*. An example is:
update table1 set col1=
'LANG_ID=(select LANG_ID from table2* where USER_ID = (select USER_ID from table1))' ||
'_CHALLENGE_RESPONSE_=((select CHALLENGERESPONSE_ from table2* where USER_id = (select USER_ID from table1)),' ||
etc for the rest of the values

I tried this -although the database shows that the affected rows are updated! but querying the table doesn't show the values in the column!
select col1 from table1 where col1 is null
shows back the original content (DESPITE it showing me xxx rows updated!)
UPDATE table1 t1
SET col1 = (SELECT 'LANG_ID=('||lang_id||')_CHALLENGE_RESPONSE_=('||
CHALLENGERESPONSE_|| ...*
FROM table2 t2
WHERE t1.user_id = t2.user_id)
WHERE t1.col1 is null;

How to populate a table based on a row selection from another table.

Hi, i just started to use ADF BC and Faces. Could some one help me or point me a solution on the following scenario .
By using a search component , a table is being displayed as a search result. If i select any row in the resulted table , i need to populate an another table at the bottom of the same page from another view. These two tables are related by primary key . May i know how to populate a table based on a row selection from another table. Thanks
ganesh

I understand your requirement and the tutorial doesn't talk about Association between the views so that you can create a Master-Detail or in DB parlance, a Parent-Child relationship.
I will assume that we are dealing with two entities here: Department and Employees where a particular Department has many Employees and hence a Parent-Child relationship.
Firstly, you need to create an Association between the two Entities - Department and Employees. You can do that by right clicking on the model's entity and then associating the two entities with the appropriate key say, DepartmentId.
Once you have done that, you need to link the two entities in the View section with this Association that you created. Then go to AppModule and make sure that in the Available View Objects: 'EmployeesView' appears under 'DepartmentView' as "EmployeesView via <link you created>". Shuttle the 'DepartmentView' to the right, Data Model and then shuttle
"EmployeesView via <link you created>" to the right, Data Model under 'DepartmentView'.
This will then be reflected in your Data Controls. After that, you simply would have to drag this View into your page as a Master-Detail form...and then when you run this page, any row selected in the Master table, would display the data in the Detail table.
Also, refer to this link: [Master-Detail|http://baigsorcl.blogspot.com/2010/03/creating-master-detail-form-in-adf.html]
Hope this helps.

FETCHING VALUES IN MULTI RECORD BLOCK FROM ANOTHER TABLE USING SELECT STATEMENT.

Hi,
I have one multi record block in which i want to fetch values
(more then one record) from another table using select statement
IN KEY NEXT ITEM.I am getting following error.
ORA-01422: exact fetch returns more than requested number of rows
Thanks in advance.

In your case I see no reason to use non-database block and to try to populate it from a trigger with a query, instead of using the default forms functionality where you can associate the block and the fields with table, create where clause using bind variables and simply use execute_query() build-in to populate the block. The power of the forms is to use their build-in functionality to interact with the database.
Also, you can base your block on a query, not on a table and you dynamically change this query using set_block_property() build-in. You can use any dynamic queries (based on different data sources) and you simply need to control the column's data type, the number of the columns and their aliases. Something like creating inline views as a block data source.
However, you can replace the explicit cursor with implicit one like
go_block('non_db_block_name');
first_record();
FOR v_tab IN (SELECT *
FROM tab
WHERE col_name = :variable)
LOOP
:non_db_block_name.field1 := v_tab.col1;
:non_db_block_name.field2 := v_tab.col2;
next_record();
END LOOP;

SQL select a concatination of entries from another table

I am trying to select a few columns from one table and then add another column that is a concatination or names from another table that referances it as below. Is this possible to do in one select statement?
table x1
ID NAME
1 Bob
1 Tom
2 Bill
table x2
ID NAMES
1 Bob, Tom
2 Bill
3

You mean string aggregation?
If yes, then it is possible like this, if you are on 10g.
SQL> create table x1 (id,name)
2 as
3 select 1, 'Bob' from dual union all
4 select 1, 'Tom' from dual union all
5 select 2, 'Bill' from dual
6 /
Tabel is aangemaakt.
SQL> select id
2       , rtrim(n,', ') names
3    from ( select id
4                , n
5                , rn
6             from x1
7            model
8                  partition by (id)
9                  dimension by (row_number() over (partition by id order by null) rn)
10                  measures (cast(name as varchar2(20)) n)
11                  rules
12                  ( n[any] order by rn desc = n[cv()] || ', ' || n[cv()+1]
13                  )
14         )
15   where rn = 1
16 /
        ID NAMES
         1 Bob, Tom
         2 Bill
2 rijen zijn geselecteerd.There are several other (slower) techniques possible as well. You can find them by using the search function on this forum.
Regards,
Rob.

Add rows from another table

Hi ,
I have a table with 20 records and 10 columns.I want to add columns from another table with out cross join.

As others have said, you need to have some sort of join condition otherwise it is a cross join.
SQL> ed
Wrote file afiedt.buf
1 with T1 as (select 'e' as c1, 2 as c2 from dual union all
2              select 'd', 3 from dual)
3      ,T2 as (select 'x' as c3, 5 as c4 from dual union all
4              select 'y', 6 from dual union all
5              select 'z', 2 from dual)
6 --
7 select T2.c3, T2.c4, T1.c1, T1.c2
8 FROM (select c1, c2, row_number() over (order by c1) as rn from T1) T1
9       FULL OUTER JOIN
10       (select c3, c4, row_number() over (order by c3) as rn from T2) T2
11*      ON (T1.rn = T2.rn)
SQL> /
C         C4 C         C2
x          5 d          3
y          6 e          2
z          2
SQL>This example assigns a row number to each row within each table and then joins using that row number.
(I've assumed the row number should be generated based on the order of the first column of each table, but you can change that as required).
What is the point of your requirement?

How could I insert the deleted row into another table within a trigger?

Hi,
How could I insert the deleted row into another table within a trigger? The destination table has the same columns as the source table. Since the statements are in the trigger, it is not allowed to query the source table named 'test'. Thanks! The trigger is as follows, uncompleted:
CREATE TRIGGER delete_trigger
AFTER DELETE
ON test
FOR EACH ROW
BEGIN
-- How could I insert the deleted row into another table
END delete_trigger;
Message was edited by:
user569548

Hi,
I'm not sure what's wrong there.
I read the oracle docs about ANALYZE and ALL_TAB_COLUMNS, and did the following:
ANALYZE TABLE my_tab VALIDATE STRUCTURE; //went ok.
SELECT column_name
FROM all_tab_columns
WHERE table_name = 'my_tab'; //but no rows selected?
This topic might not be what this thread should be about. Here I posted a new thread:
How to get colum names of the newly created table?
Thanks.
Message was edited by:
user569548

Looping delete statement where table name is coming from another table

Hi All,
We have to write code to delete records from active tables of WDSO.We have 5 DSO so inspite of writing delete statement for each table we want to put all table names into one table and then loop through it .but we are getting error when we are refering that table field which has active table name.error is :
"dictionary structure or table is either not active or does not exist "
As per my understanding in a delete /select /insert /update statement we need to put table name (whose field we are refering ) it can't be replaced by a variable .
ex: v_table = 'EMPLOYEE' .
DELETE FROMv_table WHERE EMP_NAME = 'ABDC' .
is wrong and it must be like
ex : DELETE FROM EMPLOYEE WHERE EMP_NAME = 'ABDC' .
but we want to make our code dynamic .
Can you please suggest a way so that we can read the table names from another table and delete data based on some selection fom those tables .
I tried variants ,perform etc and even searched FM for the same but not found a solution .Your help will be greatly appreciated .
Thanks in advance .
Regards,
Jaya

Hi,
You can change your statement as follows:
DELETE FROM (v_table) WHERE EMP_NAME = 'ABDC' .
However, I would not recommend this. There is a standard function module RSAN_ODS_DATA_DELETE which allows selective deletion - that should be a safer way to do this. You can

I can't create table from another table?

Hi everyone!
I have a problem that I don't known the reason why?
I'm using Oracle version 8i and I want to create a table from another table, such as:
     CREATE TABLE a_backup as SELECT * FROM a => It's OK, table a_backup is created.
But there is only a table that I can't created like that, such as:
     CREATE TABLE b_backup AS SELECT * FROM b;
When I run over command, SQL Plus is not responding... and clients are can't access to DB or Executing forever
This is the first time I met this problem.
Can Anyone help me to resolved it?
Thanks in advance!

xi`tin wrote:
Hi everyone!
I have a problem that I don't known the reason why?
I'm using Oracle version 8i and I want to create a table from another table, such as:You realize, of course, that 8i is completely out of support .... Is your OS and hardware just as old as your rdbms software, or is it only the rdbms that your company refuses to upgrade?
     CREATE TABLE a_backup as SELECT * FROM a => It's OK, table a_backup is created.
But there is only a table that I can't created like that, such as:
     CREATE TABLE b_backup AS SELECT * FROM b;
When I run over command, SQL Plus is not responding... and clients are can't access to DB or Executing forever
This is the first time I met this problem.
Can Anyone help me to resolved it?
Thanks in advance!

INSERTING INTO A TABLE FROM ANOTHER TABLE

Hi,
I am having a table called emp in which 5 columns are there, I want to insert some rows from another table called employees, only into three columns of emp table through a sub query.
Is this scenario is possible, I tried so many queries but it is not working out.
Can any body help me out.
The columns in emp table is
empno, ename, doj, designation, salary, deptno, mgrid
The columns in employees table is
empno, name, hiredate, post, salary, commission, deptno, mgr
I want to insert into empno, ename, doj, designation columns of emp table from the employees table empno, name, hiredate, post columns.
Ramesh.

It looks like your EMP table has 7 columns, not 5, and you want to insert into 4 columns, not 3.
insert into emp
(empno, ename, doj, designation)
select empno, name, hiredate, post
from employees;

Create table from another table including constraints

Hi,
Is there a way to create a table from another table including constraints.
CREATE TABLE COPY_EMP
as
SELECT *
FROM EMP
WHERE 1 =2 ;
This creates the table, but the constraints are not copied over.
I was reading about DBMS_REDEFINITION - can that be used for this scenario ?
Thanks!
Anand

>
I tried that, but the constraint names are posing a problem. And unfortunately our constraints are not named in a standard, so am finding it difficult to replace them.
Was just wondering if there were any simpler approach to this.
>
No - there isn't.
You will have to use new names for the constraints. That usually means extracting the DDL and manually changing the constraint names.

Getting description of product from another table

Hi,
I am getting the level from the user, and based on that creating an internal table. I am getting product code (PRODH) and level (STUFE) from one table (T179), and getting product description (VTEXT) from another table (T179T). I need to create a single internal table (PVS) with all three fields.
How do I do that? This may seem like a very simple question, but I have only been teaching myslef ABAP for about one week.
Once I can prepare this table, I will use a function to display it.
Regards,
Al Lal
Code:
REPORT YABHINAV16.
program to display products at chosen level *
Tables: T179, T179t.
types: begin of hierarchy,
        prodh type t179-prodh,
        vtext type t179t-vtext,
        stufe type t179-stufe,
        end of hierarchy.
data: pvs type standard table of hierarchy initial size 0.
select-options level for t179-stufe no intervals.
Select prodh stufe from T179 into corresponding fields of table pvs where stufe in level.
select vtext from t179t into corresponding fields of table pvs where prodh = pvs-prodh.
sort pvs by prodh.

Hi Just change the code accordingly...
Tables: T179, T179t.
types: begin of hierarchy,
prodh type t179-prodh,
vtext type t179t-vtext,
stufe type t179-stufe,
end of hierarchy.
types: begin of text,
         prodh type t179t-prodh,
         vtext type t179t-vtext,
         end fo text.
data: pvs type standard table of hierarchy initial size 0.
data: it_text type standard table of text,
        wa_text type text.
select-options level for t179-stufe no intervals.
start-of-selection.
Select prodh stufe from T179 into corresponding fields of table pvs where stufe in level.
select prodh vtext from t179t into corresponding fields of table text for all entries in pvs where prodh = pvs-prodh.
end-of-selection.
sort pvs by prodh.
sort it_text by prodh.
loop at pvs.
read table it_text into wa_text with key prodh = pvs-prodh.
if sy-subrc eq 0.
pvs-vtext = wa_text-text.
endif.
modify pvs.
endloop.
Award Points If useful

Default value from another table - sql query

I'm trying to make the default value of a text item as the result from an sql or pl/sql statement. I keep getting errors when I try to use a pl/sql statement to do this. Has anyone else done this?

OK, here is what I tried to put in. I have a form and I wanted to add a text field that is derived from another table, such as:
select question from qa_main where seq=:quest_num
So, what I want is to have a form where questions on tests are answered, and I want the text of the question to be brought over from the question table. I'm not sure if I'm using the correct syntax, but the ":quest_num" would be a reference to a question number in the answer table that is linked to the sequence number (primary key) in the questions table.
Of course if there are better ideas, please let me know. :)

Create a new table from another table that exists ussing a stored procedure

Hi,
I want to know if is posibble to create a new table from another table that exists ussing a stored procedure. This new table is created from other table that exists in the DB.
(in the next code the table tbl1 exist into the schema of the DB, but temp_tbl1 does not exist, it must be created by the procedure)
create or replace procedute temp is
temp_tbl1 tbl1%TYPE; //the temp_tbl1 will have the same type of tbl1
begin
create table temp_tbl1 as (select * from tbl1);
end temp;
thanks very much

cat wrote:
Hello,
I think my problem is not about this grant, because if I execute this as an "anonymous procedure":
DECLARE
BEGIN
EXECUTE IMMEDIATE 'CREATE TABLE Abonus (id NUMBER, amt NUMBER)';
END;
It runs ok
But if I do:
CREATE OR REPLACE procedure temp as
BEGIN
EXECUTE IMMEDIATE 'CREATE TABLE Abonus (id NUMBER, amt NUMBER)';
END;
I have the error
ORA-01031: Insufficient privileges
ORA-06512: at "temp", line 3Anonymous blocks are treated as "Invoker's Rights" from a privilege perspective whereas stored programs by default are treated as "Definer's Rights". Therefore using anonymous blocks is not a valid test to check this.
The simplest form of checking this issue is by executing
SET ROLE NONE;and then to run your statement/code block in question interactively. Using this approach you get in your session the effective rights of a "Definer's Rights" stored program, i.e. only privileges that you got granted directly to your user.
You can revert to the default setting by issuing
SET ROLE ALL;For more information regarding this topic, read e.g. the documentation:
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28370/subprograms.htm#LNPLS00809
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

Create a table from another table

I have Windows XP with 10g 10.2.0.1.0
I need to create a table from another table to re-arrange the table column order and add the following statement at the end of creation.
PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE
INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT
TABLESPACE "TAB_DATA"
Below iis my SQL statement, but it doesn't work. Please help.
create table my_table as (select t1, t5, t2, t3, t4 from orig_table
PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE
INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT
TABLESPACE "TAB_DATA"
*);*

Kee Kee wrote:
I have Windows XP with 10g 10.2.0.1.0
I need to create a table from another table to re-arrange the table column order Why? Column order has no meaning. The individual SELECT statement specifies the column order that particular statement wants, which may be different from the needs of some other SELECT statement.
and add the following statement at the end of creation.
PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE
INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT
TABLESPACE "TAB_DATA"
Below iis my SQL statement, but it doesn't work. Please help.
create table my_table as (select t1, t5, t2, t3, t4 from orig_table
PCTFREE 10 PCTUSED 0 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE
INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT
TABLESPACE "TAB_DATA"

Select from another table within a select

Similar Messages

Maybe you are looking for